Water heater and circulator



(No Model) P. SMITH.

WATER HEATER AND OIROULATOR.

No. 314,735. Patented Mar. 31,1885.

N. PETERS. mwwum mm. Washinglnlh ox;

-NlTED ST TES ATENT Fries.

PETER SMITH, OF DETROIT,-MIGHIGAN.

WATER HEATER AND CIRCULATOR.

SPECIFICATION forming part of Letters Patent No. 314,735, dated March31, 1885.

Application filed November 26, 1884.

To all whom it may concern:

Be it known that 1, PETER. SMITH, of Detroit, in the county of Wayne andState of Michigan, have invented new and useful Improvements in \VaterHeaters and Circulators; and I do hereby declare that the following is afull, clear, and exact description thereof, reference being had to theaccompanying drawings, which form a part of this speciiica tion.

This invention relates to certain new and useful improvementsin Waterheaters and circulators; and it is especially designed to be animprovement upon Patent No. 251,741, dated January 3, 1882, issued to meas inventor. It is a well-known fact that water contains air in itsnatural state, and that if the water is heated sufficiently the water isdeprived of this air, which is driven off by the heat applied. I11theemployment of the invention described in said Letters Patent I findthat the air expelled from the water when 'the device is filled withWater and heat ap plied rises to the top of the water-jacket andprevents the successful operation of the heater, which should benoiseless.

The object of the present invention is to provide means'for overcomingthis difiicuity and prevent the air from cushioning in the wrong place.

In the accompanying drawing, which forms a part of this specification, Arepresents afurnace surrounded by a water-jacket, B. G is a coil ofmetallic pipe arranged in the interior of the furnace. D is a damper toregulate the draft, the smoke finding an exit through the smoke-stack E.So far the de-. scription is that of the invention described in theaforesaid Letters Patent. The water to be heated passes into the heaterat the point f, circulates through the water-jacket, where it ispartially heated, and thence passes out at g and into the coil, wherethe temperature of the water is raised to the proper point be- (Nomodel.)

fore it leaves the heater through the pipe h, which communicateswithariser-pipe,through which the water passes to the compression drumF, from which, it is compelled to flow by the compression of air in saiddrum through the circulating pipe m, through which it reaches the heateragain at f. A pipe, 7c,leads from the highest point of the water-spacein the jacket to the rising pipe 7:, through which the air Which isexpelled from the water by the heat applied is allowed to escape throughsaid riser-pipe i to the compression'drum F, whence it may bedischarged, when necessary, by means of a petcock in the usual way.

A heater embodying my improvements has been in successful operation forthe past nine months in heating a dwelling by the circulation of hotwater, and with perfectly satisfactory results, running noiselessly andwithout the pounding which heretofore attended its use when employed forthis purpose.

What I claim as my invention is 1. A water heater and circulatorconsisting of an upright furnace with an inclosing waterjacket, aconduit leading into the jacket from the outside of the furnace, a coilarranged within the furnace, and having one terminal connected with thewaterjacket and the other leading directly to the outside of thefurnace, and adapted for connecting with a water-conveying pipe, and anescape-pipe for air, affording a communication between the jacket andthe riser-pipe, substantially as described.

2. In a water heater and circulator constructed and operatingsubstantially as described, an air-pipe communicating with thewater-jacket at its highest point, and the riserpipe, in combinationwith a compressiondrum, substantially as and for the purposes specified.

PETER SMITH. Witnesses:

H. S. SPRAGUE, CHARLES J. HUNT.

